대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Spectral Analysis and Performance Evaluation of Multichannel DTMF Receivers based on QFT

  • Koo, Young-Woo (Dept. of Electronics Engineering, Semyung University) ;
  • Min, Seung-Gi (Dept. of Electronics Engineering, Semyung University) ;
  • Kim, Jeng-Sik (Dept. of Electronics Engineering, Semyung University) ;
  • Yoon, Eung-Sik (Dept. of Electronics Engineering, Semyung University) ;
  • Yoon, Dal-Hwan (Dept. of Electronics Engineering, Semyung University)
  • 발행 : 2000.07.01
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초록

The economical detection of dual-tone multifrequency(DTMF) signals is an important factor when developing cost-effective telecommunication equipment. Each channel has independently a DTMF receiver, and I t informs the detected signal to processors. This paper analyze the power spectra and evaluate the performance of DTMF receiver by using tile quick Fourier transform(QFT) algorithm. As experimental results, it show the improved performance to the DTMF receivers and reduce memory waste and process the real-time.

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